Preload and retraction device for a wheel assembly and self-propelled cart comprising said device
EP4469330B1Active Publication Date: 2026-06-24SCUOLA SUPERIORE SANTANNA +1
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Patents
- Current Assignee / Owner
- SCUOLA SUPERIORE SANTANNA
- Filing Date
- 2023-01-24
- Publication Date
- 2026-06-24
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Abstract
A preload and retraction device (10, 10') of a wheel assembly comprises a linear guide (11), an internal slider (12) and an external slider (13) movable along the linear guide (11), a linear elastic member (14) arranged to connect the two sliders (12) (13), a first wheel support arm (15) integral with the internal slider (12) and a second wheel support arm (19) integral with the external slider (13), with the external slider (13) carrying a weight support wheel (20) that is actuated and the internal slider (12) carrying a traction wheel (16) that comes into contact with a rolling surface with a preload force that is a function of the geometry of the system. The use of the device (10, 10') is particularly advantageous for supporting the wheels in a self-propelled cart (100) of the type suitable for moving along a railway track for the inspection of the underbody of railway vehicles as it greatly facilitates and at least partially automates the installation of the self-propelled cart (100) on the track.
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Citation Information
Patent Citations
Semiautomatic apparatus for condition-based maintenance of railway pantograph
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Rail vehicle vehicle bottom state viewing device
CN204674585U
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DE102012004328A1
Self-propelled apparatus for on-condition inspection and maintenance of the underbody of train
WO2018060945A1